Home / 278,926.80-418,349.16-91,914

Finding the Fourth Proportional to 278,926.80, 418,349.16 and 91,914

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Solution

The fourth proportional to 278,926.80, 418,349.16 and 91,914 is: 137,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,926.80 : 418,349.16 = 91,914 : x
  2. Step 2: Convert to fraction form
    278,926.80/418,349.16 = 91,914/x
  3. Step 3: Cross multiply
    278,926.80x = 418,349.16 × 91,914
  4. Step 4: Simplify right side
    278,926.80x = 38,452,144,692.24
  5. Step 5: Solve for x
    x = 38,452,144,692.24/278,926.80
  6. Step 6: Final answer
    x = 137,857.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.